Lamp



FIG. 1 is a perspective view thereof;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines shown on the drawings depict portions of the lamp that form no part of the claimed design. 

The ornamental design for lamp, as shown and described. 